<template>
  <div class="login-form-wrapper">
    <div class="login-form-title">{{ loginTitle }}</div>
    <div class="login-form-sub-title">
      {{ loginSubTitle }}
    </div>
    <div class="login-form-error-msg">{{ errorMessage }}</div>
    <a-form
      ref="loginForm"
      :model="userInfo"
      class="login-form"
      layout="vertical"
      @submit="handleSubmit"
    >
      <!-- 用户名 -->
      <a-form-item
        field="username"
        :rules="[{ required: true, message: $t('login.form.userName.errMsg') }]"
        :validate-trigger="['change', 'blur']"
        hide-label
      >
        <a-input
          v-model="userInfo.username"
          :placeholder="$t('login.form.userName.placeholder')"
        >
          <template #prefix>
            <icon-user />
          </template>
        </a-input>
      </a-form-item>

      <!-- 密码 -->
      <a-form-item
        field="password"
        :rules="[{ required: true, message: $t('login.form.password.errMsg') }]"
        :validate-trigger="['change', 'blur']"
        hide-label
      >
        <a-input-password
          v-model="userInfo.password"
          :placeholder="$t('login.form.password.placeholder')"
          allow-clear
        >
          <template #prefix>
            <icon-lock />
          </template>
        </a-input-password>
      </a-form-item>

      <!-- 验证码 -->
      <a-form-item
        field="captcha"
        :rules="[{ required: true, message: $t('login.form.verification.errMsg') }]"
        :validate-trigger="['change', 'blur']"
        hide-label
      >
        <a-input
          v-model="userInfo.captcha"
          :placeholder="$t('login.form.verification.placeholder')"
        >
          <template #prefix>
            <icon-safe />
          </template>
          <template #suffix>
            <!-- 验证码图片 -->
            <img
              :src="captchaImage"
              alt="captcha"
              style="height: 32px; cursor: pointer"
              @click="refreshCaptcha"
            />
          </template>
        </a-input>
      </a-form-item>
      <a-space :size="16" direction="vertical">
        <div class="login-form-password-actions">
          <a-checkbox
            checked="rememberPassword"
            :model-value="loginConfig.rememberPassword"
            @change="setRememberPassword as any"
          >
            {{ $t('login.form.rememberPassword') }}
          </a-checkbox>
          <a-link @click="GoToType('forget')">{{
            $t('login.form.forgetPassword')
          }}</a-link>
        </div>
        <a-button type="primary" html-type="submit" long :loading="loading">
          {{ $t('login.form.login') }}
        </a-button>
         <a-button type="text" long class="login-form-register-btn">
          {{ $t('login.form.register') }}
        </a-button>
      </a-space>
    </a-form>
  </div>
</template>

<script lang="ts" setup>
  import { ref, reactive } from 'vue';
  import { useRouter } from 'vue-router';
  import { Message } from '@arco-design/web-vue';
  import { ValidatedError } from '@arco-design/web-vue/es/form/interface';
  import { useI18n } from 'vue-i18n';
  import { useStorage } from '@vueuse/core';
  import { useUserStore } from '@/store';
  import useLoading from '@/hooks/loading';
  import { getCode, LoginData } from '@/api/user';

  const emit = defineEmits(['reback']);
  const router = useRouter();
  const { t } = useI18n();
  //获取标题
  const loginTitle = window?.globalConfig.loginTitle;
  const loginSubTitle = window?.globalConfig.loginSubTitle;
  const errorMessage = ref('');
  const { loading, setLoading } = useLoading();
  const userStore = useUserStore();

  const loginConfig = useStorage('login-config', {
    rememberPassword: true,
    username: 'admin', // 演示默认值-上线环境请赋空值
    password: '0ly6nfYE$d8TOq2A', // 默认密码-上线环境请赋空值
  });
  const userInfo = reactive({
    username: loginConfig.value.username,
    password: loginConfig.value.password,
    captcha: '',
    captcha_id: '',
  });


  // 验证码图片
  const captchaImage = ref('');

  // 刷新验证码
  const refreshCaptcha = async () => {
    try {
      const data= await getCode({});
      captchaImage.value = data.info.img_data; // base64 图片
      userInfo.captcha_id = data.info.captcha_id;
    } catch (err) {
      errorMessage.value = (err as Error).message;
    }
  };
  // 页面加载时请求一次验证码
  refreshCaptcha();

  const handleSubmit = async ({
    errors,
    values,
  }: {
    errors: Record<string, ValidatedError> | undefined;
    values: Record<string, any>;
  }) => {
    if (loading.value) return;
    if (!errors) {
      setLoading(true);
      try {
        await userStore.login(values as LoginData);
        const { redirect, ...othersQuery } = router.currentRoute.value.query;
        var toURl = redirect as string;
        if (toURl == 'notFound') {
          toURl = 'dashboard';
        }
        router.replace({
          name: toURl || 'dashboard',
          query: {
            ...othersQuery,
          },
        });
        Message.success({
          content: t('login.form.login.success'),
          id: 'menuNotice',
        });
        const { rememberPassword } = loginConfig.value;
        const { username, password } = values;
        // 实际生产环境需要进行加密存储。
        // The actual production environment requires encrypted storage.
        loginConfig.value.username = rememberPassword ? username : '';
        loginConfig.value.password = rememberPassword ? password : '';
      } catch (err) {
        errorMessage.value = (err as Error).message;
        await refreshCaptcha();
      } finally {
        setLoading(false);
      }
    }
  };
  const setRememberPassword = (value: boolean) => {
    loginConfig.value.rememberPassword = value;
  };
  const GoToType = (keys: string) => {
    emit('reback', keys);
  };
</script>

<style lang="less" scoped>
  .login-form {
    &-wrapper {
      width: 320px;
    }

    &-title {
      color: var(--color-text-1);
      font-weight: 500;
      font-size: 24px;
      line-height: 32px;
    }

    &-sub-title {
      color: var(--color-text-3);
      font-size: 16px;
      line-height: 24px;
    }

    &-error-msg {
      height: 32px;
      color: rgb(var(--red-6));
      line-height: 32px;
    }

    &-password-actions {
      display: flex;
      justify-content: space-between;
    }

    &-register-btn {
      color: var(--color-text-3) !important;
    }
  }
</style>
